Trolley for electric railways.



No. 664,992. Patan'teq lam-fl, [90L L. DU. CHABUT. TROLLEY FOR ELECTRICRAILWAY-S.

(Application fllgd une 14, 1900.

' 2 Sheets-Sheet I.

(No Model.)

511 veutoz witnesses In: NORRIS PETERS c0 PHOTOJJYHO" wnsmumn. 0.:

UNITED STATES PATENT OFFICE.

LOUIS DORVILLE OHABUT, OF PITTSB URG, PENNSYLVANIA.

'TROLL E Y FOR ELECTRIC RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 664,992, dated January1, 1 901.

Application filed June 14, 1900.

To all whom it may concern; v

Be it known that I, LOUIS DORVILLE CHA- BUT, a citizen of the UnitedStates, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain newand useful Improvements inTrolleys for Electric Railways; andI do hereby declare the following tobe a full, clear, and exact description of the invention, such'as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to trolleys for electrical railways; and itconsists of the novel construction of the several parts and theircombination and arrangement, as will be hereinafter more fullydescribed, and particularly stated in the claims.

One of the principal objects of the invention is to so construct atrolley that a continuous contact with the overhead electric feed wireor cable will be maintained unless disengaged by a person having chargeof it.

Another object of the invention is to provide for automatically allowingthe trolley to successfully pass all obstructions, such as stay or spanwires, encountered on its passage over the feed wire or cable.

Still another object of the invention is to provide for an automaticvertical adjustment of the pole, so as to suit different distancesbetween the feed-wire and the top of the car.

Still another object of the invention is to provide for the quick andready disengagement of the trolley from the feed-wire.

A still further object of the invention is to provide for maintainingthe trolley in a vertical position, so that the shoes will always be ina horizontal position to encounter 0bstructions.

These and other objects are attainedby means of the mechanismillustrated in the' accompanying drawings, in which- Figure 1 is a sideelevation of my improved trolley; Fig. 2, a top plan view; Fig. 3, anend view in elevation; Fig. 4, a longitudinal sectional View; Fig. 5, adetail view showing the position of the'parts when the pole is inclined;Fig. 6, a detail view, partly in section, showing one of thespring-actuated locking-detents for preventing the trolley accidentallybecoming disengaged from the ca- Serial No. 20,302. (No 1 5 1.)

ble; and Fig. 7, a perspective view of the oscillatory supportsdetached.

In the several views the numeral 1 indicates a telescopic pole composedof two sectionsa lower section 2 and an upper section 3. The lowersection is pivoted to a suitable support 4:, attached to the top of thecar,'and is provided with the usual springs 5 for maintaining it invertical position.- The upper section is provided withoppositely-disposed longitudinal slots 6 6, and a pin 7, passing throughthelower section,with its ends in the slots 6, serves to secure thesections together in such manner that the upper section will to keep thetrolley-wheel in contact with the feed-wire. The upper end of the springabuts against a shoulder 9, formed in the upper section, and the lowerend is secured in the lower section in any suitable manner, or it mayabut against a collar fastened on said lower section.

The upper end of the pole-section 3 is preferably square, and secured tothe sides thereof are cheek-plates B B, in which is journaled thetrolley-wheel 10. The ends of the wheelshaft extend through thecheek-plates, and pivotally mounted thereon are vertical supporting-arms11 11, which have their upper ends bent outwardly to form stops 12 12.Secured to the lower portion of the arms 11 are brackets 13 13, to whichare hinged ver= tical arms 14 14:. The upper end of each arm 14 isprovided with a horizontal slot 15, in which is received the rearedge orbase of a locking-detent 16. Each detent is preferably triangular inshape and is pivoted on a pin 17, secured in a bracket l8,attached tothe arm 14. The inner edges of'the detents prolhe slots 6 are per-- jectinwardly toward each other,slightly overlapping, and serve to preventthe trolley from becoming accidentally disengaged from the feed-wire.Leaf-springs 19 19, one upon each side of the pivotal point, serve tohold ing against the base or rear edge of the detent. Each hinged arm isprovided with a transverse slot or opening 21, through which projects acam-arm 22 of a lever 23, journaled in bearings 24E. Coiled around eachpin hinging the arm 14 to the bracket 13 are two springs 25 25, havingone end resting against the bracket and the other end bent over theshaft of the lever 23. These springs serve to maintain the arms 14 intheir normal position, which is vertical, with their upper ends restingagainst the stops 12.

Secured to the upper end of each hinged arm is a curved shoe 0, which inencountering the span or stay wires supporting the feed-wire causes thetrolley to readily pass under the span or stay wires, the detents 16preventing the feed-wire leaving the trolley. In case other obstructionsare encountered the detents will instantly turn on their pivots,overcoming the force exerted by one set of the springs 19, and permitthe free and easy passage of the trolley, the tensioned force of the setof springs serving to return the detents to normal position.

In order to maintain the supporting-arms 11 and their hinged attachmentsin a constantly-vertical position, each supportingarm is provided withoppositely-disposed side arms 27 27, to which are pivotally attachedyokes 28 28, and to each yoke is attached one end of a chain 29, theother end of the chain being attached to one side of the coil-spring 8by any suitable connection passing through the slot 6 at shoulder 9.This mechanism serves to keep the trolley well balanced and in aconstant vertical position no matter how great the inclination of thepole. If deemed necessary, coil-springs may be employed to insure a moreperfect balancing of the trolley, in which case the respective ends ofthe springs would be attached in the same manner as the ends of thechains, the latter passing through the springs.

To relieve the trolley-wheel from engagement with the feed-wire, it isonly necessary to draw upon the operating-cords 30, which will cause thecam-arms 22 to force outwardly the hinged arms carrying the shoes andlocking-detents, the movement of the levers 23 being limited by stops 31striking against the sides of the hinged arms. With the parts in thisposition (shown in dotted lines in Fig. 3) the trolley-wheel may bereadily disengaged from the feed-wire.

To insure a more regular, constant, and direct connection with thefeed-Wire through the trolley-wheel, I provide a sliding contactcomposed of a contact-rod 32 and a tube or pipe 33, the rod beingsecured in the pole-section 2 and sliding in the tube, which is securedin pole-section 3.

Various changes or modifications may be made in the details ofconstruction without departing from the spirit of my invention orsacrificing the principle thereof.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-- 1. In an overhead trolley, thecombination of a telescopic trolley-pole carrying a wheel, a connectionbetween the telescopic sections, a spring arranged to permit thevertical adjustment of the upper telescopic section, supporting-armsjournaled on the ends of the wheel-shaft, oppositely-extending armssecured to the supporting-arms, yokes pivotally attached to theoppositely-extending arms, and chains having one end attached to theyokes and the other ends attached to the spring, substantially asspecified.

2. In an overhead trolley, the combination with the cheek-plates of atrolley-wheel, of

arms pivoted on the wheel-shaft, spring-actuated arms hinged to thesupporting-arms, automatically-operatin g lockin g-detents carried bysaid hinged arms, and shoes carried by the hinged arms, adapted toencounter obstructions on the feed-wire and permit the trolley tosuccessfully pass such obstructions.

3. In an overhead trolley, the combination with the cheek-plates of atrolley-wheel, of vertical supporting-arms pivoted on the ends of thewheel-shaft, spring-actuated arms carrying shoes, said arms hinged tothe supportin g arms, automatically operating lockingdetents carried bythe hinged arms and means whereby said supporting-arms and theirattachments are maintained in proper operative position.

4:. In an overhead trolley, the combination with the cheek-plates of atrolley-wheel, of vertical supporting-arms pivoted on the ends of thewheel-shaft, spring-actuated arms carrying shoes, said arms hinged tothe supporting-arms, spring-actuated locking-detents, and means forkeeping the parts in proper operative position.

5. In an overhead trolley, the combination with the cheek-plates of aillOllOY-WllGGl, of pivoted supporting-arms carrying spring-actuatedhinged arms and automatically-operating locking-detents, shoes mountedon the upper ends of the hinged arms, and means for moving said hingedarms outward, as and for the purpose set forth.

6. In an overhead trolley, the combination of the cheek-plates of atrolley-wheel, of pivoted supporting-arms, spring-actuated arms hingedto the supporting-arms, cam-levers journaled in the hinged arms, andmeans for operating said levers to cause the hinged arms to moveoutwardly so as to permit the disengagement of the trolley from thefeedwire.

7. In an overhead trolley, the combination of supporting-arms pivoted onthe ends of the wheel-shaft, spring-actuated arms hinged to thesupp0rting-arms, and shoes arranged at porting-arms, yokes connected tothe outwardly-extending arms, of a telescopic pole,- a spring forvertically adjusting the upper telescopic section, and connectionsbetween the yokes and said spring, whereby the supporting-arms are heldin constant vertical position.

In testimonywhereof I aifix my signature ,in the presence of twowitnesses.

LOUIS DORVILLE CHABUT;

Witnesses:

D. GREGG MOKEE; J l O. MCCORMICK, Jr

